Used in biomedical research to measure atrial natriuretic peptide (ANP) levels in human plasma or serum samples. Helps assess cardiac function and diagnose or monitor heart-related conditions such as heart failure, hypertension, and left ventricular dysfunction. Commonly used in clinical labs and research settings to study the renin-angiotensin-aldosterone system and natriuretic peptide pathways. Provides a sensitive and specific quantitative analysis, supporting studies on cardiovascular diseases and therapeutic responses.